The IS31PM3420A-GRLS4-TR from Lumissil Microsystems is a Synchronous Buck DC-DC converter that converts an input voltage of 3.8-36 V to an output voltage of 1-24 V. It has an efficiency of 96%. This converter has a constant on-time control mode, enabling simple loop compensation and a fast transient response. It ensures stable operation while minimizing external component requirements with a 400 kHz switching frequency. This converter supports forced continuous conduction mode (FCCM) to reduce output voltage ripple at light loads. It includes protection features such as cycle-by-cycle current limit, output short-circuits protection with hiccup mode, over-voltage protection, thermal shutdown, and under-voltage lockout (UVLO) protection. Additionally, it includes a spread spectrum for EMI reduction, internal soft start, and a power good flag output. This RoHS-compliant converter is available in a surface-mount package that measures 6.20 x 5.10 x 1.70 mm and is ideal for general-purpose power supply applications.